/*
 *  ShowImage.java
 *  Examples
 *
 *  Created by Stuart MacKay on Fri Jul 25 2003.
 *  Copyright (c) 2001-2004 Flagstone Software Ltd. All rights reserved.
 *
 *  This code is distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 *  EXPRESS OR IMPLIED, AND Flagstone HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING
 *  WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
 *  PURPOSE, AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
 */

package com.flagstone.transform.util.examples;

import com.flagstone.transform.examples.Example;

import com.flagstone.transform.*;
import com.flagstone.transform.util.*;

import java.io.*;

/*
 * This example shows how image can be displayed using the FSImageConstructor.
 *
 * To run this example, type the following on a command line:
 *
 *     java com.flagstone.transform.util.examples.ShowImage \
 * 	       --file image-file [--resultDir path]
 
 * where
 *
 *     image-file is the path to a file containing either BMP, PNG or JPEG image.
 *
 *	   resultDir is the directory where the Flash file generated by the example is
 *	   written to.
 *
 * The name of the Flash file generated is the same as the image file with the 
 * file extension replaced with a '.swf' suffix.
 */
public class ShowImage extends Example
{
	private FSImageConstructor imageGenerator = null;  
	private FSMovie movie = new FSMovie();
	
    public static void main(String[] args)
    {
        new ShowImage(args);
    }
    
    public ShowImage(String[] args)
    {
        super(args);
    
		String imageFile = getOption("file", "");
			
    	try 
    	{
			/* Create the FSImageConstructor object used to generate the object
			 * containing the image definition. Initialize it using the name of 
			 * the image file passed on the command line when the exanple was run.
			 */
    		imageGenerator = new FSImageConstructor(imageFile);  
    		
			/* Create the name of the Flash file generated using the name of the 
			 * font file - adding a '.swf' suffix.
			 */
			int first = imageFile.lastIndexOf(File.separatorChar);
			int last = imageFile.lastIndexOf('.');
			
			String fileOut = resultDir + File.separator + imageFile.substring(first, last) + ".swf";
    
			createMovie(imageFile);
			
			movie.encodeToFile(fileOut);
    	}
		catch (Exception e)
		{
			/* Several exceptions could be thrown to get to this point. FSImageConstructor
			 * will throw a FileNotFoundException, IOException or DataFormatException 
			 * if the image format is not support or if an error occurs while
			 * loading and decoding the image data.
			 * 
			 * The FSMovie will throw a FileNotFoundException or IOException if 
			 * there is a problem generating the Flash file.
			 * 
			 * The exceptions are all caught in a single handler to make the code more 
			 * readable.
			 */
			System.err.println("Cannot create movie for the image: " + imageFile);
		}
     }
    
    public void createMovie(String filename)
    {
        int imageId = movie.newIdentifier();
        int shapeId = movie.newIdentifier();
        
        int xOrigin = imageGenerator.getWidth()/2;
        int yOrigin = imageGenerator.getHeight()/2;
        
        // Generate the image defintion
        FSDefineObject image = imageGenerator.defineImage(imageId);
        
        /*
         * All images must be displayed as a bitmap fill inside a shape. The 
         * FSImageConstructor class generates the shape enclosing the image.
         * If no border is required then the line style may be set to null.
         */
        FSDefineShape3 shape = imageGenerator.defineEnclosingShape(shapeId, imageId, 
        	-xOrigin, -yOrigin, new FSSolidLine(20, FSColorTable.black()));
        
		/* 
		 * Add all the objects together to create the movie.
		 */
		movie.setFrameRate(1.0f);
		movie.setFrameSize(shape.getBounds());
		movie.add(new FSSetBackgroundColor(FSColorTable.lightblue()));
        movie.add(image);
        movie.add(shape);
        movie.add(new FSPlaceObject2(shapeId, 1, 0, 0));
        movie.add(new FSShowFrame());
    }
}